Fire-pot for furnaces.



. E. BECK.

FIRE POT FOR FURNACES.

APPLICATION FILED MAY 25, I9I6.

Patented De@ 19, 1916,

- 'prrr VHENRY El BECK, or nnrinrson, OHIO,I"ssIs1\TOn To r'rnnwlnnnnrson 'FOUNDRY AND iunonrnnooivrr'anmor Dennison, OHIO.

Fran-rorron FURNncns.'

fuel by providingl air passages or ducts within the wall of the lire pot opening at their lower ends into the ash pit and at their upper ends opening through the inner surface of the said wall near the top thereof.V While advantageous results are secured by vproviding the wall of a fire pot with suchA passages, nevertheless, the presence of the' passages in the wall is liable to result in unequal expansion of the wall and unless some means is provided to prevent, the wall isv liable to fracture because of such unequal expansion thereof.

Therefore, the invention aims also to pro-V vide means for resisting the strains incident to unequal expansion of the wall and for this purpose the invention contemplates the' provision of integral outwardly extending flanges entirely surrounding the wall, these flanges serving the further purpose of conducting heat from the solid portions of the wall to the hollow portions thereof, thereby not lonly resulting in all portions of the wall being substantially equally heated,` but also serving to increase the area of the radiating surface of `the fire pot.

In the accompanying drawings Figure 1 is a top plan view of a fire pot constructed in accordance with the` present invention, a portion being shown in section; Fig. 2 isa vertical sectional view therethrough on the line 2f-2 of Fig. 1.

The fire pot embodying the presentinvention is 'of the usual hollow frustowcon'ical form and the wall thereof is indicated in general by the numeral 1. At suitable intervals in its circumference the wall l is formed with air passages 2 which open at their lower ends, as at 3, through the lower edge of the said wall and which at their upper ends communicate with the interior of the fire pot through slots e formed in the Application'ied May 25, 191e. f serial No, sasso.V

innersurface of the `wall 1, the said slots l .being locatedrelatively close to the upper edge' of thesaid wall. At this point'it will be understood that when the lire pot is properly installed within the furnace, the pas?- sages will communicate at their lower ends `with the interior of the ash pit of the furvspeasti-Mien.ofrefaisraamt. l paeenteansea;19,io1e

nace and upward draft will be created i through these' Ipassages as the fuel is con sumed, t-he 'air being heated and being disi charged throughthel slots 4 into the re pot above' the burning fuel.

The air passing upwardly through` the passages 2 will tend to cool the wall of the fire pot in thevicinity` of the passages and ,thus the said'wall willbe subjected to `unequal degrees of `evpansion at various points lin its circumference and this would be liable to result in` fracture of the wall of thefre pot if it .were not for the provision of the;

means which will now be described.

In the' drawing, the numeral 5 indicates a series of flanges each of which extends continuously; circumferentially of the wally l and thesefflanges are integral with the said wall and are suitably spaced one'above another throughout the height of the ire pot,

`the flanges occupying substantially horizontal planes and being preferably gradually thinned inthe direction of their outer edges. Also it will. be noted that the flanges are unbroken, or in other words, integral throughout theirentire extent. The ianges, in the present structure, serve threepurposes. In thefirst place they serve to increase the area ofthe radiating surface of the fire pot and thereby provide for more thorough heat-l ing of the surrounding air; in' the second place they cause a more even distribution Aof heat throughout the area of the wall of the fire pot, thereby tending to vequalize .the expansion of the said wall throughout all of lits portions; and,in the third place '1. 'A furnace fire pot Vprovided in its wall i with a plurality of air passages vopening through'the lower edge of the said wall and at theirnpper ends opening through 'theV they serve to bind the'wall of the fire pot.'

inner face of the wall, and continuous cir 2 b Y i 1,209,106

Y euniseribing flanges surrounding the said through the loWer'edge of the Wall and at 10 Wall and spaced one above another througln their upper ends terminating short of the out the height of the said Wall. Y upper edge of the said Wall and opening 2. A furnace re pot having a Wall inthrough the inner surface of the Wall, the tegral throughout and provided in its said said Wall being provided With a plurality of Wall With la plurality ofair passages eXtendintegral eiroumsoribing reinforcing an ges 15 ing upwardly therethrough and arranged in unbroken throughout their extent.

series extending around the .said Wall, In testimony whereof l affix my signature. the passages at their lower ends opening HENRY'E. BECK. '[ns] Copies of this patent may be obtained for :live cents each, by addressing the Commissioner of Batents,

` Washington, DV.VG. l' 

